Looking to buy one of these soon! I am extremely happy with my DT 770 Pro (250 ohm version), and if the DT 1770 has a similar sound signature as this but with better sound quality across the board it seems like the perfect upgrade for me.
One thing I really like about my DT 770 is the bass extension and "oomph" is has. Trying out headphones with less extension and punch in the bottom end just feels really underwhelming to me, even if they are extremely good in all the other areas. I find bass extension really important as it sort of lays the foundation for all the frequencies above it, and if that foundation of bottom end texture is lacking from the overall sound picture it all falls apart in my opinion.
To make an example: I tried both the Denon AH-MM400 and B&W P7 at a hi-fi store yesterday. The first test track I put on was "Mountains" from the Interstellar soundtrack on Tidal Hi-Fi, and while the mids and treble were great, the climax that starts at around 1:55 just lacked impact due to the drivers not being able to paint out the lower frequencies. Another good test track would be "Stay" from the same album, where the part that begins at 1:35 has a very important low bass note that serves as the foundation for the organ melody above. Again, if this is missing the whole thing just lacks musical impact. I know it's not fair to compare them to the DT770 as they have smaller drivers and are meant to be portable headphones, it's just that with how I'm used to these tracks sounding I couldn't help feeling underwhelmed. A part of the music was quite literally missing. I'm sure they are great HPs for their intended mobile use, though.
Out of curiosity, could any of you guys who have a DT1770 do this bass test on youtube and report when the bass rolls off and becomes inaudible? My 770 goes down to about 22-23hz before I can't hear it anymore:
